<template>
  <div class="login_coctainer">
    <div class="login_box">
      <!-- 头像区 -->
      <div class="avatar_box">
        <img src="../assets/logo.png" alt="" />
      </div>
      <!-- 登录表单区 -->
      <el-form label-width="0px" class="login_form" :model="loginfrom" :rules="loginFormRules" ref="loginFormref">
        <!-- 用户名 -->
        <el-form-item prop="username">
          <el-input prefix-icon="iconfont icon-user" v-model="loginfrom.username"></el-input>
        </el-form-item>
        <!-- 密码 -->
        <el-form-item prop="password">
          <el-input prefix-icon="iconfont icon-3702mima" v-model="loginfrom.password" type="password"></el-input>
        </el-form-item>
        <!-- 按钮 -->
        <el-form-item class="btns">
          <el-button type="primary" @click="login">登录</el-button>
          <el-button type="info" @click="resetLoginFOrm">重置</el-button>
        </el-form-item>
      </el-form>
    </div>
  </div>
</template>
<script>
export default {
  name: "Login",
  data() {
    return {//这是登录表单的数据绑定对象
      loginfrom: {
        username: "",
        password: "",
      },
    //这是表单的验证规则对象
      loginFormRules:{
    //验证用户名是否违法
          username:[
              {required:true,message:"请输入登录名称",trigger:"blur"},
              {min:3,max:10,message:"长度在 3 到 10 个字符",trigger:"blur"}
          ],
    //验证密码是否合法
          password:[
               {required:true,message:"请输入登录密码",trigger:"blur"},
                 {min:6,max:15,message:"长度在 6 到 15 个字符",trigger:"blur"}
          ]
      }
    };
    
  },
  methods: {
      //点击重置登录表单
      resetLoginFOrm(){
       this.$refs.loginFormref.resetFields()
      },
      login(){
        //validate表单验证 参数是布尔值 
          this.$refs.loginFormref.validate(async valid=>{
              if(!valid) return;
           const {data:res}=  await this.$http.post("login",this.loginfrom)
           //message内置很多提示框error失败 success成功的框
            if(res.meta.status!==200) return this.$message.error("登录失败")
            this.$message.success("登录成功")
            //把token保存到客户端的sessionStorage中
             window.sessionStorage.setItem("token",res.data.token)
             this.$router.push("/home")
          })
      }
  },
};
</script>
<style scoped>
.login_coctainer {
  background-color: #2b4b6b;
  height: 100vh;
}
.login_box {
  width: 450px;
  height: 300px;
  background-color: #fff;
  border-radius: 3px;
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
}
.avatar_box {
  height: 130px;
  width: 130px;
  border: 1px solid #eee;
  border-radius: 50%;
  padding: 10px;
  box-shadow: 0 0 10px #ddd;
  position: absolute;
  left: 50%;
  margin-left: -80px;
  margin-top: -65px;
  background-color: #fff;
}
.avatar_box img {
  height: 100%;
  width: 100%;
  border-radius: 50%;
  background-color: #eee;
}
.btns {
  display: flex;
  justify-content: flex-end;
}
.login_form {
  position: absolute;
  bottom: 0;
  width: 100%;
  padding: 0 20px;
  box-sizing: border-box;
}
</style>
